Yes, I know there is a solution available from Apple for Thunderbolt. Yes, I know there is a solution available from Apple for USB 2.0 to fast Ethernet (10/100).
I am looking for an adapter to plug into a USB 3.0 port, providing me Gigabit (10/100/1000) LAN capability via wired ethernet.
Best Answer
StarTech makes the USB31000S, which is a USB 3.0 to Gigabit Ethernet adapter with support for VLANs, jumbo frames and checksum offloading. List price is about USD 55.
These are based on the ASIX AX88179 chip, which has drivers for OS X 10.6 - 10.8 available (bottom of previous link). Any other product using this chip would also work.